PCIex1 to PCIex16 Graphics Card Extension Board (Compatible with LattePanda Sigma)

PCIex1 to PCIex16 Expansion Board provides a convenient way to extend PCIe connectivity for the LattePanda Sigma single board computer. Designed for compact high‑performance systems, this PCIe expansion adapter converts a PCIe x1 interface into a full‑length PCIe x16 slot, enabling connection of graphics cards and other PCIe peripherals. Plug‑and‑play hardware design removes driver installation requirements while maintaining stable high‑speed signal transmission. When paired with the M.2 M Key to PCIex4 expansion card, this PCIe adapter module enables external GPU setups and additional PCIe devices, allowing the LattePanda Sigma platform to unlock significantly expanded hardware capability.

Figure: Interfaces Diagram of PCIex1 to PCIex16 Expansion board

Note: The USB interface on the expansion adapter transmits PCIe signals rather than standard USB data. Operation requires connection with an M.2 M Key to PCIex4 Expansion Board when attaching external PCIe hardware.

Full-Length PCIe x16 Expansion Capability

This PCIe extension adapter transforms a compact PCIe x1 interface into a standard PCIe x16 slot, allowing high‑bandwidth peripherals such as graphics cards, accelerator cards, and other PCIe devices to be connected externally. The expansion board design provides flexibility when integrating desktop‑class PCIe hardware with compact computing platforms, especially for embedded AI computing, development systems, or edge computing applications built around LattePanda Sigma.

Designed for LattePanda Sigma Expansion

Optimized for integration with LattePanda Sigma systems, this PCIe bridge board works alongside the M.2 M Key to PCIex4 expansion card to establish a stable external PCIe pathway. This configuration enables multiple external PCIe devices or GPUs to operate alongside the Sigma motherboard, offering expanded processing power and hardware acceleration for demanding workloads such as AI inference, machine vision, and graphics‑intensive computing.

Integrated Cabling for Simplified Setup

The expansion kit includes a USB3.0 signal cable and a 15‑pin SATA to 6‑pin GPU power cable, reducing the need for additional wiring components during installation. Multiple power supply options and bundled cables streamline system assembly while ensuring sufficient power delivery for connected PCIe peripherals. This integrated accessory design improves deployment convenience for developers building external GPU platforms or custom PCIe expansion systems.

Figure: Shipping List of PCIex1 to PCIex16 Expansion board

Figure: Wiring Diagram of PCIex1 to PCIex16 Expansion board and LattePanda Sigma

Typical applications include external GPU setups, PCIe accelerator expansion, embedded AI computing platforms, hardware prototyping environments, and performance enhancement for compact single board computers such as LattePanda Sigma.